IT FEELS LIKE HOME
Home
WHO IS IT FOR
Smarter water management for every home.
Reduce freshwater consumption, lower everyday costs and create a more sustainable water cycle for your household.
Everyday Living
Use water more intelligently without changing your daily routine. GREHA recycles water from showers and baths for reuse in toilets, laundry and garden irrigation.
Family Homes
A practical solution for households with greater water needs. The system works quietly in the background, helping your family reduce freshwater consumption every day.
New Builds
Make water efficiency part of your home from the very beginning. GREHA integrates seamlessly into new residential projects for a smarter and more sustainable result.
Home Renovations
Upgrade your existing home with a modern water-recycling solution. GREHA can be incorporated into renovation projects with minimal impact on the way your home looks and functions.
WATER SAVINGS IN DAILY LIFE
Give your household water a second use.
Depending on the layout of the home, the number of users, and the selected applications, a GREHA system can cover approximately up to 80% of non-potable water needs.
Water from showers, bathtubs, and sinks, which would otherwise go directly to the drain, is collected, treated, and safely reused within the home.
Up to 80%

Coverage potential for non-potable water needs, depending on the home and system design.
24/7

Fully automated operation, requiring no change in users’ daily habits.
3 main uses

Toilet flushing, laundry, and irrigation, without consuming valuable drinking water.
RAINWATER & GREYWATER FOR THE HOME
Make use of every drop of water in your home.
GREHA offers integrated water management solutions that include the collection and utilization of rainwater as well as the treatment of greywater from the home. The two streams can operate separately or in combination, creating a unified and highly efficient water reuse system.
Rainwater is collected from the roof, filtered, and stored, while greywater from showers, sinks, and washing machines is properly treated for safe non-potable use. Both can be used in toilets, irrigation, and outdoor cleaning, significantly reducing mains water consumption.
Collection & Treatment
Rainwater is directed into the system through a separate collection network and initial filtration.
Greywater is collected from selected points in the home and directed to a GREHA treatment unit for purification and reuse.
Storage
Each water stream can be stored separately or in a combined storage tank, depending on system design, household needs, and available infrastructure.
Reuse
Treated greywater and filtered rainwater can be used in toilets, washing machines (where permitted), irrigation, and outdoor cleaning, according to the technical specifications of the installation.
Automated Operation
GREHA ensures fully automated operation with level control, flow management, overflow protection, and backup supply from the mains, without any change to the daily use of the home.